_____ Does H_0: p notequalto 0.25 versus H_a: p = 0.25 comply with the rules for
ID: 3232746 • Letter: #
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_____ Does H_0: p notequalto 0.25 versus H_a: p = 0.25 comply with the rules for setting up statistical hypotheses, and why? A. Yes. There is a null hypothesis and alternative hypothesis, one of them has an = (the alternative), they're both in terms of a parameter, and the cut-off value, 0.25, is the same in the both. B. No. Only the null hypothesis should have a statement of equality. C. No. For proportions, you can't use a Student's p distribution. D. Since we don't have a sample, we cannot answer this questions. _____ Let the test statistic Z have a standard normal distribution when H_0 is true. Give the significance level for H_a: mu notequalto mu, rejection region z greaterthanorequalto 2.88 or z greaterthanorequalto -2.88. A. alpha = Phi(-2.88) + {1 - Phi(2.88)} = 0.004 B. When alpha is not provided, choose alpha = 0.05. C. alpha = 1 - Phi(2 times -2.88) almostequalto 0. D. alpha/2 = 0.025 _____ Which of the following choices correctly describes a sampling distribution statistic theta from a random sample of size n? A. A probability distribution that models the behavior of all possible values of theta that from all possible random samples of size n. B. N(mu, sigma/Squareroot n) C. If n is sufficiently large, then the population is normal.Explanation / Answer
24. Null Hypothesis ( H0 ) Statement of zero or no change. If the original claim includesequality (<=, =, or >=), it is the null hypothesis.
Hence answer is B. Only the null hypothesis should have statement of equality
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